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American Tower Corp. SEC filings

In the twelve months since 23 September 2025 American Tower Corp. filed 33 documents with the SEC of the kinds listed here: 23 current reports (8-K), about 10 other events; 6 officer or director change; 4 material agreement; 4 new financial obligation; 4 results of operations; 3 quarterly reports (10-Q), 2 additional proxy materials (DEFA14A), 1 employee share plan registration (S-8), 1 delisting notice by the exchange (25-NSE), 1 annual report to shareholders (ARS), 1 proxy statement (DEF 14A). The latest, filed 18 September 2026: 8-K, officer or director change, other events.

FiledFormWhat it was aboutPeriod or event dateFiling
18 September 20268-KOfficer or director change, Other events17 September 2026EDGAR
14 September 20268-KMaterial agreement, New financial obligation14 September 2026EDGAR
9 September 20268-KOther events9 September 2026EDGAR
28 July 202610-Qquarterly report30 June 2026EDGAR
28 July 20268-KResults of operations28 July 2026EDGAR
4 June 20268-KOther events2 June 2026EDGAR
2 June 20268-KOther events2 June 2026EDGAR
27 May 20268-KMaterial agreement, New financial obligation27 May 2026EDGAR
26 May 2026S-8employee share plan registrationEDGAR
22 May 202625-NSEdelisting notice by the exchangeEDGAR
21 May 20268-KOfficer or director change, Shareholder vote, Other events20 May 2026EDGAR
19 May 20268-KOther events19 May 2026EDGAR
7 May 20268-KMaterial agreement, New financial obligation7 May 2026EDGAR
28 April 2026DEFA14Aadditional proxy materialEDGAR
28 April 202610-Qquarterly report31 March 2026EDGAR
28 April 20268-KResults of operations28 April 2026EDGAR
8 April 2026ARSannual report to shareholders31 December 2025EDGAR
8 April 2026DEFA14Aadditional proxy materialEDGAR
8 April 2026DEF 14Aproxy statement20 May 2026EDGAR
10 March 20268-KOfficer or director change6 March 2026EDGAR
5 March 20268-KOther events5 March 2026EDGAR
27 February 20268-KOfficer or director change25 February 2026EDGAR
24 February 202610-Kannual report31 December 2025EDGAR
24 February 20268-KResults of operations24 February 2026EDGAR
29 January 20268-KOfficer or director change26 January 2026EDGAR
28 January 20268-KOther events28 January 2026EDGAR
5 December 20258-KMaterial agreement, New financial obligation5 December 2025EDGAR
4 December 20258-KOther events4 December 2025EDGAR
2 December 20258-KOther events2 December 2025EDGAR
7 November 20258-KOfficer or director change5 November 2025EDGAR
28 October 202510-Qquarterly report30 September 2025EDGAR
28 October 20258-KResults of operations28 October 2025EDGAR
24 September 20258-KRegulation FD disclosure23 September 2025EDGAR

An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened. Form 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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